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Finding the Fourth Proportional to 442.80, 611.09 and 246.35

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Solution

The fourth proportional to 442.80, 611.09 and 246.35 is: 339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.80 : 611.09 = 246.35 : x
  2. Step 2: Convert to fraction form
    442.80/611.09 = 246.35/x
  3. Step 3: Cross multiply
    442.80x = 611.09 × 246.35
  4. Step 4: Simplify right side
    442.80x = 150,542.02
  5. Step 5: Solve for x
    x = 150,542.02/442.80
  6. Step 6: Final answer
    x = 339.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.